Chess
Chess is sometimes called "the thinking man's game." Chess and chess-like games with strategic elements have existed for thousands of years in cultures all over the globe. Chess is simple to learn but nearly-impossible to master, with thousands of move combinations for players to use. For immobile adults who are also elderly, studies published in medical journals have also shown that the mental stimulation in games like chess can stave off the effects of dementia and Alzheimer's.
Bingo
Bingo may not be as exciting as a trip to Las Vegas or Atlantic City, but the thrill of chance and competition is easily found in this simple game. Bingo is best played with a large group, and is simple enough that even children and grandchildren can get in on the fun. The sense of accomplishment and victory in scoring a bingo can be further heightened with the addition of prizes for winners. The prizes can be as simple as a new book or as extravagant as electronic devices.
Creative Projects
Artistic expression can allow bedridden adults the chance to exercise their creativity. Adults who are having a difficult time with their condition can also use this as a chance to externalize their emotions through a physical medium and work out some of that tension. The project can be something traditional, such as painting, sculpting with clay or even toothpick sculptures. Create a writing group where immobile adults can come together and share their stories and poetry.
Video Games
While they might not be for everyone, video games have certainly come a long way since the days of Pac-Man. As games become more realistic and complex, they become a greater than ever way for immobile adults to feel a sense of freedom. Creative sandbox games such as Minecraft allow players to explore a vast, open world where the players control everything they see and creative choices are limitless. And online multiplayer games, such as World of Warcraft, offer social interaction that are unhampered by the inability to leave your bed.